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Recent earthquakes near Askja volcano in Iceland
Friday, Nov 22, 2013
A small swarm of earthquakes has occurred today under the eastern caldera rim. Another minor swarm took place yesterday under Þórðarhyrna volcano 20 km to the NE. [more]
Map of recent quakes near Askja
Wednesday, Mar 27, 2013
Small earthquakes have also been more frequent under and near the Askja caldera and Bardabunga volcano (to the SW of Askja) in the past few days. [more]

Askja volcano

Stratovolcano 1516 m (4,974 ft)
Central Iceland, 65.03°N / -16.75°W
Current status: restless (2 out of 5)
Askja webcams / live data
Last update: 22 Nov 2013
Typical eruption style: explosive + effusive
Askja volcano eruptions: 1797(?), 1875, 1919, 1921, 1922, 1923, 1924(?), 1926, 1938, 1961
Last earthquakes nearby:
TimeMag. / DepthDistanceLocation
Sun, 20 Apr
Sun, 20 Apr 09:37 UTCM 1.1 / 3.8 km12 km10.7 km SW of Kistufell
Sun, 20 Apr 04:28 UTCM 0.4 / 0.1 km5 km5.4 km SW of Dreki
Sat, 19 Apr
Sat, 19 Apr 23:23 UTCM 0.5 / 11.2 km29 km0.9 km SSW of Herðubreiðarlindir
Sat, 19 Apr 23:23 UTCM 0.7 / 11.5 km29 km1.5 km W of Herðubreiðarlindir
Sat, 19 Apr 22:49 UTCM 0.6 / 10.7 km18 km4.9 km SW of Kistufell
View all recent quakes
Askja is a large basaltic central volcano that forms the Dyngjufjöll massif. It is truncated by three overlapping calderas, the largest of which is 8 km wide and may have been produced primarily from subglacial ring-fracture eruptions rather than by subsidence.

Background:

A major rhyolitic explosive eruption from Dyngjufjöll about 10,000 years ago was in part associated with the formation of Askja caldera. Many postglacial eruptions also occurred along the ring-fracture. A major explosive eruption on the SE caldera margin in 1875 was one of Iceland's largest during historical time. It resulted in the formation of a smaller 4.5-km-wide caldera, now filled by Öskjuvatn lake, that truncates the rim of the larger central caldera. The 100-km-long Askja fissure swarm, which includes the Sveinagja graben, is also related to the Askja volcanic system, as are several small shield volcanoes such as Kollatadyngja. Twentieth-century eruptions at Askja have produced lava flows from vents located mostly near Öskjuvatn lake.

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Source: GVP, Smithsonian Institution



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